CVE Catalog

CVE-2026-97155

MediumCVSS 6.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.11%

1th percentile - higher than 1% of all known CVEs

Summary

Fabasoft Folio Client before 2026 does not restrict which web origins may invoke its functions by default. The registry value VALIDDOMAINS was optional and empty, resulting in all domains being trusted. Any website visited by a user with the client installed could invoke client functions, e.g., downloading documents, opening documents, and synchronizing files.

Risk Assessment

A malicious website could exploit the client to perform unauthorized operations on user documents and files, potentially leading to data leakage or modification.

Recommendation

Upgrade Fabasoft Folio Client to version 2026 (Build 26.0.0.10) or 2026 April Release (Build 26.4.0.76). Configure VALIDDOMAINS to restrict trusted origins.

Related vulnerabilities

Original NVD description (English source)

Fabasoft Folio Client before 2026, a locally installed component that communicates with the Fabasoft browser extension via web messaging, does not restrict which web origins may invoke its functions by default. The registry value VALIDDOMAINS, which limits permitted origins, was optional and empty by default, resulting in all domains being trusted. As a consequence, any website visited by a user with the Folio Client and browser extension installed could invoke client functions, e.g., related to downloading documents, opening documents, and synchronizing files. The first fixed builds are Fabasoft Folio Client 2026 (Build 26.0.0.10) and Fabasoft Folio Client 2026 April Release (Build 26.4.0.76). This client is, for example, shipped with Fabasoft eGov-Suite.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS